netdev - Re: [PATCH bpf v2 0/3] Restrict bpf_probe_read{,str}() and bpf_trace

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Message-ID: <CAADnVQJn__9kWGfrfApJhnd19KXdOX=UbybUKjtHGX7WfcbvWg@mail.gmail.com>
Date:   Fri, 15 May 2020 08:18:04 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     Alexei Starovoitov <ast@...nel.org>, bpf <bpf@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Brendan Gregg <brendan.d.gregg@...il.com>,
        Christoph Hellwig <hch@....de>,
        John Fastabend <john.fastabend@...il.com>,
        Yonghong Song <yhs@...com>
Subject: Re: [PATCH bpf v2 0/3] Restrict bpf_probe_read{,str}() and
 bpf_trace_printk()'s %s

On Fri, May 15, 2020 at 3:11 AM Daniel Borkmann <daniel@...earbox.net> wrote:
>
> Small set of fixes in order to restrict BPF helpers for tracing which are
> broken on archs with overlapping address ranges as per discussion in [0].
> I've targetted this for -bpf tree so they can be routed as fixes. Thanks!
>
> v1 -> v2:
>   - switch to reusable %pks, %pus format specifiers (Yonghong)
>   - fixate %s on kernel_ds probing for archs with overlapping addr space
>
>   [0] https://lore.kernel.org/bpf/CAHk-=wjJKo0GVixYLmqPn-Q22WFu0xHaBSjKEo7e7Yw72y5SPQ@mail.gmail.com/T/

Applied to bpf tree. Thanks
We'll send pr to Dave soon to hopefully get this and other fixes
into 5.7 before Sunday rc.